A 2016 review article by Ahn et al. in Neuroplasticity compares drugs and supplements like Racetams, Adderall, Ritalin, dopaminergic agents, and cholinergic agents, detailing their availability and effects.

Every Sunday: the week’s new conflicts and verdict changes — and nothing else.

Native comments, Twitter mentions, and Reddit threads about this claim — surfaced together so the conversation isn't fragmented across platforms.